Metal-organic frameworks based on on 2,5-furandicarboxylic acid or 2,5-thiophenedicarboxylic acid

Abstract

The present invention relates to porous metallic frameworks comprising at least one at least bidentate organic compound coordinated to at least one metal ion, wherein the at least one at least bidentate organic compound is derived from 2,5-furandicarboxylic acid or 2,5-thiophenedicarboxylic acid. The present invention further relates to shaped bodies comprising these frameworks, processes for producing them and their use, in particular for the storage and separation of gases.

The invention claimed is: 
     
       1. A method of separating gaseous water from a gas mixture, the method comprising exposing the gas mixture to a porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion that includes aluminum ion, wherein the at least one at least bidentate organic compound is derived from 2,5-furandicarboxylic acid or 2,5-thiophenedicarboxylic acid, wherein the porous metal-organic framework has a Langmuir surface area of from 1153 m 2 /g to 1375 m 2 /g, or a BET surface area of 850 m 2 /g to 1021 m 2 /g, follow preactivation at 130°C. 
     
     
       2. The method according to  claim 1 , wherein the porous metal-organic framework is comprised in a shaped body. 
     
     
       3. The method according to  claim 1 , wherein the porous metal-organic framework is prepared by a process, the process comprising:
 (a) reaction of a reaction mixture comprising a metal salt corresponding to the at least one metal ion and 2,5-furandicarboxylic acid or 2,5- thiophenedicarboxylic acid and also a solvent at a temperature in the range from 100° C. to 150° C. for at least 3 hours and 
 (b) isolation of the precipitated solid. 
 
     
     
       4. The method according to  claim 3 , wherein the initial concentration of the metal salt in the reaction mixture is in the range from 0.05 mol/L to 0.8 mol/L . 
     
     
       5. The method according to  claim 3 , wherein the ratio of the initial molar amount of 2,5-furandicarboxylic acid or 2,5-thiophenedicarboxylic acid used to the initial molar amount of metal salt used, based on the metal, is in the range from 0.5:1 to 2:1. 
     
     
       6. The method according to  claim 5 , wherein the gaseous mixture is natural gas that includes the gaseous water. 
     
     
       7. The method according to  claim 3 , wherein the solvent comprises N,N-dimethylformarmide. 
     
     
       8. The method according to  claim 1 , wherein the at least one at least bidentate organic compound is derived from unsubstituted 2,5-furandicarboxylic acid or unsubstituted 2,5- thiophenedicarboxylic acid. 
     
     
       9. The method according to  claim 1 , wherein the at least one at least bidentate organic compound is derived from 2,5-furandicarboxylic acid. 
     
     
       10. The method according to  claim 1 , wherein the at least one at least bidentate organic compound is derived from 2,5-thiophenedicarboxylic acid. 
     
     
       11. The method according to  claim 1 , wherein the gaseous mixture is natural gas that includes the gaseous water. 
     
     
       12. A method of separating gaseous water from a gas mixture, the method comprising exposing the gas mixture to a porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion that includes aluminum ion, wherein the at least one at least bidentate organic compound is derived from 2,5-thiophenedicarboxylic acid.